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Identify if a string is a number
...d Feb 14 at 13:37
Vadim Ovchinnikov
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answered May 21 '09 at 18:08
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ORA-00979 not a group by expression
...Y or use functions on them which compress the results to a single value (like MIN, MAX or SUM).
A simple example to understand why this happens: Imagine you have a database like this:
FOO BAR
0 A
0 B
and you run SELECT * FROM table GROUP BY foo. This means the database must return a single r...
URL Encoding using C#
...T request to the VB forum software and logs someone in (without setting cookies or anything).
13 Answers
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Choosing Mobile Web HTML5 Framework [closed]
For the new project, I have been searching for a framework with support of HTML5 and runs on mobile, that is IPhone, IPads. I found out these:
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Background color not showing in print preview
I am trying to print a page. In that page I have given a table a background color.
When I view the print preview in chrome its not taking on the background color property...
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Read String line by line
..."line.separator"));
This gives you all lines in a handy array.
I don't know about the performance of split. It uses regular expressions.
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Passing arguments to “make run”
I use Makefiles.
13 Answers
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Unicode Processing in C++
...or dealing with your data (or a similar library)
In your own data store, make sure everything is stored in the same encoding
Make sure you are always using your unicode library for mundane tasks like string length, capitalization status, etc. Never use standard library builtins like is_alpha unless ...
Check if element exists in jQuery [duplicate]
How do I check if an element exists if the element is created by .append() method?
$('elemId').length doesn't work for me.
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What is the difference between the 'COPY' and 'ADD' commands in a Dockerfile?
What is the difference between the COPY and ADD commands in a Dockerfile, and when would I use one over the other?
13 A...